The most important benefit is quality. This method is the closest you can get to the dent never happening in the first place. No grinding, bondo, fillers, or primers are needed because your original factory paint is not disturbed. There are no problems with filler or paint shrinkage months after the repair as is typical with most body shop repairs.
Cost is also a major benefit of PDR. Repairs are typically between one-quarter to one-third the cost of conventional dent repair.
Time savings is yet another advantage. Many dents can be fixed in less than an hour. Hail damage is typically fixed in one day with PDR. A full repair may take 2-3 weeks for the same type of damage.